mirror of
https://github.com/Cacti/cacti.git
synced 2026-11-09 05:26:50 +09:00
Larry Adams
34bea8a659
git-svn-id: svn+ssh://repo.cacti.net/var/data/svnroot/cacti/branches/BRANCH_0_8_6/cacti@3658 860744bd-22fc-0310-8c96-e9fe5004b5ca
252 lines
9.9 KiB
PHP
252 lines
9.9 KiB
PHP
<?php
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/*
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+-------------------------------------------------------------------------+
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| Copyright (C) 2004 Ian Berry |
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| This program is free software; you can redistribute it and/or |
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| modify it under the terms of the GNU General Public License |
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| as published by the Free Software Foundation; either version 2 |
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| of the License, or (at your option) any later version. |
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| This program is distributed in the hope that it will be useful,
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| but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| GNU General Public License for more details. |
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+-------------------------------------------------------------------------+
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| cacti: a php-based graphing solution |
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+-------------------------------------------------------------------------+
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| Most of this code has been designed, written and is maintained by |
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| Ian Berry. See about.php for specific developer credit. Any questions |
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| or comments regarding this code should be directed to: |
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| - iberry@raxnet.net |
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+-------------------------------------------------------------------------+
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| - raXnet - http://www.raxnet.net/ |
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+-------------------------------------------------------------------------+
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*/
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define("REGEXP_SNMP_TRIM", "(hex|counter(32|64)|gauge|gauge(32|64)|float|ipaddress|string|integer):");
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define("SNMP_METHOD_PHP", 1);
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define("SNMP_METHOD_BINARY", 2);
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/* we must use an apostrophe to escape community names under Unix in case the user uses
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characters that the shell might interpret. the ucd-snmp binaries on Windows flip out when
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you do this, but are perfectly happy with a quotation mark. */
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if ($config["cacti_server_os"] == "unix") {
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define("SNMP_ESCAPE_CHARACTER", "'");
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}else{
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define("SNMP_ESCAPE_CHARACTER", "\"");
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}
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function cacti_snmp_get($hostname, $community, $oid, $version, $username, $password, $port = 161, $timeout = 500, $retries = 0, $environ = SNMP_POLLER) {
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global $config;
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/* determine default retries */
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if (($retries == 0) || (!is_numeric($retries))) {
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$retries = read_config_option("snmp_retries");
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if ($retries == "") $retries = 3;
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}
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/* do not attempt to poll invalid combinations */
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if (($version == 0) || (($community == "") && ($version != 3))) {
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return "U";
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}
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if (snmp_get_method($version) == SNMP_METHOD_PHP) {
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/* make sure snmp* is verbose so we can see what types of data
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we are getting back */
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snmp_set_quick_print(0);
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if ($version == "1") {
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$snmp_value = @snmpget("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
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}elseif ($version == "2") {
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$snmp_value = @snmp2_get("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
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}else{
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$snmp_value = @snmp3_get("$hostname:$port", $username, "authNoPriv", "MD5", $password, "", "", $oid, ($timeout * 1000), $retries);
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}
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}else {
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/* ucd/net snmp want the timeout in seconds */
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$timeout = ceil($timeout / 1000);
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if ($version == "1") {
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$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
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}elseif ($version == "2") {
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$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
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$version = "2c"; /* ucd/net snmp prefers this over '2' */
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}elseif ($version == "3") {
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$snmp_auth = "-u $username -l authNoPriv -a MD5 -A $password"; /* v3 - username/password */
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}
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/* no valid snmp version has been set, get out */
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if (empty($snmp_auth)) { return; }
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if (read_config_option("snmp_version") == "ucd-snmp") {
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exec(read_config_option("path_snmpget") . " -O vt -v$version -t $timeout -r $retries $hostname:$port $snmp_auth $oid", $snmp_value);
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}else {
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exec(read_config_option("path_snmpget") . " -O fntev $snmp_auth -v $version -t $timeout -r $retries $hostname:$port $oid", $snmp_value);
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}
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}
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if (isset($snmp_value)) {
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/* fix for multi-line snmp output */
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if (is_array($snmp_value)) {
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$snmp_value = implode(" ", $snmp_value);
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}
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}
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/* strip out non-snmp data */
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$snmp_value = format_snmp_string($snmp_value);
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return $snmp_value;
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}
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function cacti_snmp_walk($hostname, $community, $oid, $version, $username, $password, $port = 161, $timeout = 500, $retries = 0, $environ = SNMP_POLLER) {
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global $config;
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$snmp_array = array();
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$temp_array = array();
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/* determine default retries */
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if (($retries == 0) || (!is_numeric($retries))) {
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$retries = read_config_option("snmp_retries");
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if ($retries == "") $retries = 3;
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}
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$path_snmpbulkwalk = read_config_option("path_snmpbulkwalk");
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if ((snmp_get_method($version) == SNMP_METHOD_PHP) &&
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(($version == 1) ||
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(version_compare(phpversion(), "5.1") >= 0) ||
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(!file_exists($path_snmpbulkwalk)))) {
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/* make sure snmp* is verbose so we can see what types of data
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we are getting back */
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/* force php to return numeric oid's */
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if (function_exists("snmp_set_oid_numeric_print")) {
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snmp_set_oid_numeric_print(TRUE);
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}
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snmp_set_quick_print(0);
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if ($version == "1") {
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$temp_array = @snmprealwalk("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
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}elseif ($version == "2") {
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$temp_array = @snmp2_real_walk("$hostname:$port", $community, $oid, ($timeout * 1000), $retries);
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}else{
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$temp_array = @snmp3_real_walk("$hostname:$port", $username, "authNoPriv", "MD5", $password, "", "", $oid, ($timeout * 1000), $retries);
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}
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$o = 0;
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for (@reset($temp_array); $i = @key($temp_array); next($temp_array)) {
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$snmp_array[$o]["oid"] = ereg_replace("^\.", "", $i);
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$snmp_array[$o]["value"] = format_snmp_string($temp_array[$i]);
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$o++;
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}
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}else{
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/* ucd/net snmp want the timeout in seconds */
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$timeout = ceil($timeout / 1000);
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if ($version == "1") {
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$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
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}elseif ($version == "2") {
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$snmp_auth = (read_config_option("snmp_version") == "ucd-snmp") ? SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER : "-c " . SNMP_ESCAPE_CHARACTER . $community . SNMP_ESCAPE_CHARACTER; /* v1/v2 - community string */
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$version = "2c"; /* ucd/net snmp prefers this over '2' */
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}elseif ($version == "3") {
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$snmp_auth = "-u $username -l authNoPriv -a MD5 -A $password"; /* v3 - username/password */
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}
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if (read_config_option("snmp_version") == "ucd-snmp") {
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$temp_array = exec_into_array(read_config_option("path_snmpwalk") . " -v$version -t $timeout -r $retries $hostname:$port $snmp_auth $oid");
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}else {
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if (file_exists($path_snmpbulkwalk) && ($version > 1)) {
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$temp_array = exec_into_array($path_snmpbulkwalk . " -O n $snmp_auth -v $version -t $timeout -r $retries -Cr50 $hostname:$port $oid");
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}else{
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$temp_array = exec_into_array(read_config_option("path_snmpwalk") . " -O n $snmp_auth -v $version -t $timeout -r $retries $hostname:$port $oid");
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}
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}
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if ((sizeof($temp_array) == 0) ||
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(substr_count($temp_array[0], "No Such Object")) ||
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(substr_count($temp_array[0], "No more variables"))) {
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return array();
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}
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for ($i=0; $i < count($temp_array); $i++) {
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$snmp_array[$i]["oid"] = trim(ereg_replace("(.*) =.*", "\\1", $temp_array[$i]));
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$snmp_array[$i]["value"] = format_snmp_string($temp_array[$i]);
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}
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}
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return $snmp_array;
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}
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function format_snmp_string($string) {
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/* strip off all leading junk (the oid and stuff) */
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$string = trim(ereg_replace(".*= ?", "", $string));
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/* remove ALL quotes */
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$string = str_replace("\"", "", $string);
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$string = str_replace("'", "", $string);
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$string = str_replace(">", "", $string);
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$string = str_replace("<", "", $string);
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$string = str_replace("\\", "", $string);
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/* Remove invalid chars */
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$k = strlen($string);
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for ($i=0; $i < $k; $i++) {
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if ((ord($string[$i]) <= 31) || (ord($string[$i]) >= 127)) {
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$string[$i] = " ";
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}
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}
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$string = trim($string);
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if (preg_match("/(hex:\?)?([a-fA-F0-9]{1,2}(:|\s)){5}/", $string)) {
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$octet = "";
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/* strip of the 'hex:' */
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$string = eregi_replace("hex: ?", "", $string);
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/* split the hex on the delimiter */
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$octets = preg_split("/\s|:/", $string);
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/* loop through each octet and format it accordingly */
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for ($i=0;($i<count($octets));$i++) {
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$octet .= str_pad($octets[$i], 2, "0", STR_PAD_LEFT);
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if (($i+1) < count($octets)) {
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$octet .= ":";
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}
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}
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/* copy the final result and make it upper case */
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$string = strtoupper($octet);
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}elseif (preg_match("/Timeticks:\s\((\d+)\)\s/", $string, $matches)) {
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$string = $matches[1];
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}
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$string = eregi_replace(REGEXP_SNMP_TRIM, "", $string);
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return trim($string);
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}
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function snmp_get_method($version = 1) {
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if ((function_exists("snmpget")) && ($version == 1)) {
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return SNMP_METHOD_PHP;
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}else if ((function_exists("snmp2_get")) && ($version == 2)) {
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return SNMP_METHOD_PHP;
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}else if ((function_exists("snmp3_get")) && ($version == 3)) {
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return SNMP_METHOD_PHP;
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}else if ((($version == 2) || ($version == 3)) && (file_exists(read_config_option("path_snmpget")))) {
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return SNMP_METHOD_BINARY;
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}else if (function_exists("snmpget")) {
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/* last resort (hopefully it isn't a 64-bit result) */
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return SNMP_METHOD_PHP;
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}else if (file_exists(read_config_option("path_snmpget"))) {
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return SNMP_METHOD_BINARY;
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}else{
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/* looks like snmp is broken */
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return SNMP_METHOD_BINARY;
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}
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}
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?>
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